Something I have addressed before: Zappa was cynical as fuck about our political system and our two major parties, but he was still a huge advocate of voting.
If you're not registered to vote, register to vote. The deadline is October 6 in the earliest states; check your local listings.
Even if you can't find a Presidential candidate you want to vote for in either major party -- believe me, I can relate --, even if you can't find one in a third party -- hell, I can relate to that too --, there's other shit to vote for. Maybe there's someone you'd like for a representative, either federal or state. Maybe there's a ballot measure deciding funding for your local teachers, firefighters, and police. Maybe you have a disgusting, racist monster of a sheriff who is pissing your county's money away pursuing frivolous lawsuits of his own and paying off not-so-frivolous lawsuits against him, and you should vote for whoever's running against that odious piece of slime. You know, hypothetically speaking. Paul Penzone 2012.